That term is for the "new" generation of oil filter material for engines that MB suggests LONG oil change intervals!

Some type of processed cotton product instead of paper.

MB dealers sell that type of filter for all of the V6 & V8 engines from 1998

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator